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. Author manuscript; available in PMC: 2014 Oct 17.
Published in final edited form as: Spectroscopy (Springf). 2013 Oct 1;39(10):s18–s25.

Figure 3.

Figure 3

(a) Human plasma and (b) urine matrix-based calibration curves produced using paper strip extraction before LC–MS-MS analysis of xanthohumol (XN) and its metabolites (isoxanthohumol [IX], 8-prenylnaringenin [8PN], and 6-prenylnaringenin [6PN]). Each concentration level was analyzed in triplicate.